Spraying device



` Feb.13, 1940. 9 MTT'EK 2,190,639

SPRAYING DEVICE Filed Feb. 23, 1959 4 Sheets-Sheet l Feb. 13, 1940. J. wnr'TEK SPRYINQ DEVICE Filed Feb. 25, 193,9 @Sheets-'sheet 2 dros/ M Feb., 13, 1940. J. wlTn-:K 2,190,639

SPRAYING DEVICE f Filed Reb. 23,` l939 4 Sheets-Sheet 3 Feb. 13, 1940. J. wxTTEK SPRAYING DEVICE Filed Feb. 23, 1939 4 Sheets-Sheet 4 Patented Feb. 13, 1940 PATENTV OFFICE sPaAYrNG DEVICE Joseph Wittek,

Pasadena, Calif;

. Application February y23, 1939, Serial No. 258,006

16 Claims.

This invention relates to spraying devices adapted tol spraying lawns, trees, and the like.

One of the objects of my invention is to provide a variably adjustable multi-jet water spraying device which is adapted to economical, systematic directi'onally-controlled spraying of defined areas with uniform saturation and without undue overlapping to a saving in time and water.

The device is preferably provided with a; main valve and four outlets, three of which are preferably provided with individually controlled valves so that the spray patterns may be varied and also afford consecutive spraying of adjacent areas in deiined selected spray patterns. Y

When all the four outlets are open the device Will spray a substantially square area and, through the manipulation oi the individual Valves to coact in different combinations, the spray jets may be selectively directed in one or several differently combined directions to produce varied patterns of the sprayed areas.'

The invention also has for its object to provide a novel sprinkler head including novel means for deiiecting, evenly distributing and forcibly emitting finely divided mist-like sprays, thus aiording a uniform coverage and gradualuniform saturation of a square. 't

Another object of my invention resides in the mounting and arrangement of the deflector relatively to the orifices of jet openings to thereby produce the finely divided mist-like spray and uniform saturation of the sprayed area.

Another object of my invention is found in the provision of a novel valve for each oi.' the outlet openings which is simple in construction and low in cost of manufacture.

Still another object of my invention resides in the novel construction of the base which is designed to slide easily over a lawn without upsetting itself or damaging the lawn when the device is pulled by a hose in movement to selected locations.

A further object of my invention is to provide a novel sprayhead with a circular deflector positioned above a circular disk mounted on the outlet end of body of the spray head and provided with a plurality of discharge openings, said circular disk being adjustable relatively to the spray head body to thereby afford a selective directional adjustment of the several sprays emanating from the discharge openings therein.

A further object of the invention residesin the provision of a standard spray head with interchangeable discharge opening disks having discharge openings varying in sizes and number thereof and adapted to cooperate with interchangeable deflectors of different diameters and walls of differing angular slope, including removable plugs-in several of the discharge openings to afford selective spraying through one or more of 5 the discharge openings in such disks.

A still further object of my invention resides in the provision of a spray head of simple construction comprising atubular body having a perforated closure wall at one end and a de- 10' fiectorsecured to said wall cooperating with the perforations in-sald Wall to produce the desired spray.

With the above and other objects in view, my invention consistsin the novel combination, con- 15 struction and arrangement of the parts and members shown in preferred form in the drawings..

This application is a continuation in part of my abandoned application Serial No. 118,399, filed December 30, 1936.

In the drawings in which like reference characters indicate like or similar parts:

Fig. 1 is a side elevation of a spraying device embodying my invention,

Fig. 2 is a plan view of the device showing the 25 base in part,

Fig. 3 is a vertical section taken on line 3-3 of Fig. 2) v Fig, 4 is an enlarged detail of a portion of the sprinkler head,

Fig. 5 is an enlarged cross-section taken on line 5-5 of Fig. 3 showing the outlets,

Fig. '6 is an enlarged cross-section taken on line 6-6 0f Fig. 3 showing the valves,

Fig. '7 is an enlarged cross-section taken on 35 line l-J of Fig. 3,

Fig'. 8 is a cross-section taken on line 8`8 of Fig. 6 through one of the,valves, j

Fig. 9 is a diagramrnatical illustration of the pattern of the sprayed area when all four jets 40 are open, V l

Fig. 10 illustrates the pattern of thesprayed area when three jets are open,

Fig. 11 illustrates the pattern of the sprayed area when two opposite jets are open, 45

Y Fig. 12 illustrates the pattern of the sprayed area when only one open jet is used,

Fig. 13 illustratessthe pattern of the sprayed area when two adjacent vjets are used,

Fig. 14 is a side elevation of a spraying device 50 embodying my invention and showing an adaptation` of my invention to an upright water supply pipe for spraying trees, shrubbery and the like,

Fig. 15 Y is a vertical section taken on line Fig. 16 is a plan view of the device taken on line lli-I6 of Fig. 14,

Fig. 17 is a cross-section taken on line |1-I1 of Fig, 14,

Fig. 18 is avertical section through the sprinkler head showing a larger deector and modied adjustable outlet disk,

Fig. 19 is a vertical section through a modified spray head of simple construction wherein the outlet openings are fixed relatively to the body of the head,

Fig. 20 is a plan view taken on line 20-20 of Fig. 19,

Fig. 21 is a vertical section of a spray head similar to that shown in Fig. 19 but having comparatively large discharge openings cooperating with a larger type of deflector,

Fig. 22 is a plan view taken on line 22-22 of Fig. 21, l

Fig. 23 is a modification showing simplified form of my invention,

Fig. 24 is a plan section taken on line 24-24 of Fig. 23 showing relative dimensions of orices and deector base,

Fig. 25 shows a table of formulae which I employ in my novel spray head design,

Figs. 26, 27 and 28 show, respectively, side elevation, plan view and bottom view of a Spray head similarrto that shown in Figs. 1 to 8 inclusive but provided with an additional main valve for controlling the amount of fluid vpassing from the source of supply to the four discharge openings, three of which are preferably controlled by individual valves, and

Fig. 29 is an enlarged vertical section taken on line 29-29 of Fig. 27.

'I'he device as shown in Figs. 1 to '1 inclusive consists of a tubular body I5 having an enlarged flange I6 at its lower end to which I attach by means of screws I1 a pair of flat bars I8' in crossed over-lappingarrangement to constitute the supporting base therefor.

To provide a readily slidable base, the bars I8 are slightly deflected downwardly from their crossed central overlapping portions to thus retain the spray device slightly above the top oi the lawn or ground, and at their ends, the bars are curved upwardly to thus provide curved supporting faces.

Near the lower end, the tubular body I5 is formed with an enlarged interiorly threaded connection I9 adapted to receive a standard threaded hose or pipe connection for admitting water through the side opening 20 into the vertical passage 2I of the body I5.

The upper end of the body I5 is enlarged to constitute the sprinkler head 22 which head is iiattened at its upper end and provided with a plurality of vertically disposed spaced cylindrical passages 23 constituting the spray jets or outlet openings. I prefer to use four of such jets.

Three of these passages 23 extend from the top flat face 24 downwardly for communication .with the laterally disposed passages 25 within the radially arranged valve housings or extensions 26 formed integrally with the head 22, and each of such passages 25 is provided with a cylindrical pin valve 21 for controlling the open or closed position of its respective spray jet 23.

Each pin valve 21 consists of a solid cylindrical bar adapted to fit closely within the passage 25, and the outer end of each pin is provided with an operating handle 28 disposed transversely to the longitudinal axis of the pin. Each extension 26 is provided with a semicircular cross-slot 29 within which the operating handle 28 can be oscillated between open and closed positions of the valve.

The inner end of each pin valve 21 extends to the passage-2| and is provided at such end with a longitudinal chamber or bore 30 which extends slightly beyond the vertical discharge jet opening 23 and each chamber 3U is also provided with a transverse opening 3I in the chamber wall which is adapted to register with the discharge opening 23.

Since the device would no doubt be used with no less than one spray jet I have preferred to omit the valve 21 for the discharge opening indicated by numeral 23 and have therefore provided an opening 32 in the lower end of the head 22 which provides direct open communication between such openings 23 and the passage 2|.

The sprinkler head 22 is provided with' a preferably removable novel deector 33 which consists of a substantially solid inverted frustoconical body secured to the top of the surface 24 by screw 34 and positioned relatively centrally to the head 22 and to the discharge end of the four discharge jets, openings 23 and 23.

'Ihe lower face of the deector 33 is preferably formed with a small circular extension 35 which is adapted to be seated in a similarly formed recess 36 in the upper face 24 of the head 22 to thereby insure a proper or precise positioning of the defiector, and particularly its lower marginal edge 33A relatively to the orifices of the `iet openings 23 and 23.

In order to secure the desired directional, evenly and uniformly distributed and finely divided spray from the combined operation of all four of the jets 23 and 23', the diameter of the lower lateral face of the deector 33 is so designed that its marginal rim 33A overlaps portions of the orifices or outlet ends of the discharge jets 23 and 23 and the uncovered portions of the outletI ends of the discharge jets 23 and 23 are so positioned that streams of water emerging therefrom under pressure engage the conical face 33B to thereby produce the desired square spray. See Fig. 5 of drawings for preferred relative proportions to secure uniform saturation.

As above pointed out, it is important that the deectors be properly and precisely positioned and therefore its marginal edge 33A must be for practical square-spraying and uniform saturationy purposes, definitely located relatively to a circle intersecting the centers of the equally spaced orices of the four jets, and the diameter of each of the four orifices must have a definite proportional relation to the diameter of such circle intersecting the centers of the four orices in order to produce the desired uniform distribution and saturation of the sprayed square area.

It appears that such relative proportions and dimensions of the diameters of the equally spaced orifices, the diameter of the circle intersecting their centers and the diameter of the base portion of the conical deilector is controlled by physical or khydraulic laws at present unknown to me, however, I have discovered that a spray head such as herein disclosed which will produce a uniformly distributed spray adapted to provide a substantially uniform saturation of a square area is one which is based upon substantially a. design in which:

The diameter of the base of the inverted frustoconical deilector is substantially equal to the diameter of a circle intersecting the centers oi the equally spaced orices less si; of an inch when the diameter of each of such four ories is substantially 1%4 of an inch, or in other words, if the diameter of the base of the deector is 7A; of an inch, the diameter of a` circle intersecting the centers of the four equally spaced orifices is 2%2 of.an inch and the diameter of each orifice is 1%4 of an inch.

I have found that the above proportions produced the desired result, namely, a substantially uniform saturation of a square-sprayed area.

I have found that if the orifices are relatively proportionately larger, that .the portions of the spray directed to the corners of such squaresprayed area will be comparatively concentrated with less water reaching the sides and intermediate parts of the sprayed square area.

If the orifices are relatively proportionately smaller than above set forth, then the portions of the square-sprayed area between the corners receive relatively proportionate more saturation than the corner portions.

If the diameter of the base of the deilector is relatively less than 'Mg of an inch, the corners will receive proportionately or relatively more saturation than the other portions of the sprayed square area.

If the diameter of the base of the deector is relatively greater than of an inch, then the corners will receive very little of the spray and the sprayed pattern will resemble that of four fan-shaped areas.

If the diameter of the circle intersecting the centers of the four orifices is relatively decreased. the discharge spray will be relatively concentrated in the direction' of the four corners, and if such diameter is relatively increased..then less than the proper proportionate amount of water will be discharged in the direction of the corners and the intermediate parts of the sprayed square area will `receive a proportionately greater'saturation.

Variation of the pressure oi the water passing through the spray head effects, within practical limits, the size of the sprayed square area as well as the fineness of the particles of such spray, since the higher the pressure, the finer the spray will be and the larger will be the sprayed square area. A comparatively great reduction in water pressure results in a coarser spray and smaller sprayed area.

The small upper marginal rim 33c is preferably formed perpendicularly to the top lateral face of the deflector.

The valves 21 as shown in Figs. 1, 3, 4, 5, 6 and 8 are in closed position. The handle shown by broken line in the lower part of Fig. 6 indicates an open position of one of the valves.

Water admitted through a suitable hose or pine connected to the connection |9 will pass through opening 2li into the passage 2| for discharge open inner end of chambers 30 and through openings 3| into the discharge outlets 23.

When al1 of the valves 21 are opened the` sprayed area is substantially represented by a squale pattern as shown diagrammatically by Fig.

When three of the jets are open, the sprayed area is somewhat oblong as shown in Fig. 10.

The fan-shaped spray indicated in Fig. 12 afforded by the one valveless outlet 23' is used as a concentrated spray adapted particularly for spraying dened areas such as narrow parkways or flower beds.

When two djacent jets are open, the resultant triangular spray indicated by Fig. 13 is particularly adaptable to spraying corners or triangular areas.

Figs. 14, 15, 16 and 17 illustrated the adaption of my invention to a device for' spraying trees wherein 31 indicates a water supply pipe connected by the T 38 with an upright pipe 39 having a spray head 40 connected to the upper end thereof.

The spray head 40 is provided with alower end which is interiorly threaded to receive the upper end of pipe 39 andthe enlarged upper end is preferably formed with a pair of diametrically oppositely disposed iiattened sides 4i!A for'wrench engagement.

The upper end of the head 49 is formed with a circular recess 40B dened byan inwardly disposed circular seat 49C adapted to receive a close fitting circular disk 4| having .preferably a plurality of circularly spaced discharge openings 42. It is obvious that the diameter and the number of such openings 42 may be varied to suit the character of spraying desired.

The spray head 40 is also provided with a bridge 43 formed integrally with the body within ornear the discharge end thereof and preferably disposed a spaced distance below the discharge opening disk 4|'.

'I'he discharge disk 4| is preferably provided with a centrally disposed opening 45 adapted to receive the circular extension 46 formed integrally with the bottom of the defiector 41 to thereby afford proper setting of the defiector beveled wall 48 relatively to the circularly arranged openings 42.

The deflector 41 is provided with a central opening adapted to receive a screw 49 which extends into threaded engagement within the opening 44 of the bridge 43 and which upon tightening will securely retain both deflector 41 and disk 4I at the discharge end of the head 4D.

In Fig. 18 I show a larger diameter deflector 41 cooperating with openings 42 spaced in a circle of a diameter greater than that shown in Fig. 15 wherein a smaller diameter deflector is shown. It will be noted that the angles of the deflector walls 48 are diierent to thereby vary the sprays emitted. Also, in Fig. 18 I show one of the several tightly` fitted removable plugs 50 which may be furnished with each disk 4|. One or more or all of these plugs 50 may be removed by the user lto thereby afford discharge from a `varying or selective number of discharge openings 42.

-As above stated, an object or important feature of my invention resides in the adjustabilty of the discharge opening disk 4| relatively to the head 40.

It will be understood that the head 40 may be readily screw-mounted to the upper end of the vertical spray pipe 39 and that after such screwmounting of the head 40, the screw 4,9 may be -loosened or withdrawn to permit the turning of the disk 4| into a selected position relatively to trees or shubbery disposed about such spray pipe 39 to thereby adjust the positions of the discharge openings 42 for the desired directional spraying of such trees or shrubbery. When the proper directional adjustment is made, the tightening of screw 49 will retain such disk 4I in fixed position relatively to the head 40 and the things or area to be sprayed.

In Figs. 19 and 20, the spray head consists of a tubular body 5I having an enlarged outlet portion SIA and an end closure wall SIB with circularly spaced openings 52 communicating with a chamber 5IC of largerl diameter than the inside diameter of the threaded pipe connection end SI D. 'Ihe closure wall SIB is also provided with a central threaded opening SI E adapted to receive the securing screw 53 which retains the deilector 54 securely in position on the outer face of wall SIB.

In the modification shown in Figs. 21 and 22, the body 5S is provided with a passage 55A of uniform diameter and the end closure wall S513 is provided with circularly spaced discharge openings 56 arranged near the margin of the head and extending through the wall 55B and the body wall therebelow for communication with the passage SSA. The dei'lector 51 is secured to the wall 55B by screw 58.

Figs. 21 and 22 also show another new and useful feature of my invention in the provision of removable sleeves S9 which afford variation in the character of the spray and amount of iluid discharged.

One or more or all of the openings 56 could be provided with these sleeves 59 of restricted openings and several sets of such sleeves with varying sizes of passages could be furnished with each oi' the heads shown in Figs. 19 and 20. I have shown only one of such interchangeable sleeves S9 in Figs. 21 and 22.

'Ihese sleeves 59 are of tubular form and are tight fitting inthe openings S6 and positively re tained against outward movement by the overlapping portion of the deecto'r 51.

Referring to the' simplified spray head shown in Figs. 23 and 24 which embodies the principal features of my design and which is readily adaptable to low cost manufacture, 64 indicates a source of fluid supply as for example a pipe having a threaded outlet end 64A on which is adapted to be screw-mounted my improved spray head consisting of a standard pipe cap 65 preferably provided with the four discharge openings or orifices 65A drilled within the end of the cap 65. The deector 33 is secured to the end of the cap 65 by a screw 34' preferably having its head disposed in the countersunk recess, as shown in Fig. 23.

Referring to the modification shown in Figs. 26 to, 29 inclusive, the spray head 22A includes a. bottom interiorly threaded inlet pipe connection ISA. The upper end portion is provided with preferably four vertically disposed circularly arranged discharge passages 23. Three oi' these passages extend from the top ilat face 24 downwardly for communication with the laterally disposed passages 25 in the extensions 26. Each of these three passages 25 is provided with a cylindrical pin valve 21 for controlling the open or closed position of its respective discharge passage 23.

Each pin valve 21 consists of a solid cylindrical bar adapted to fit closely within the passage 25, and the outer end of each pin is provided with an operating handle 28 disposed transversely to the longitudinal axis of the pin. Each extension 26 is provided with a semi-circular cross-slot 29 within which the operating handle 28 can be oscillated between open and closed positions of the valve.

The inner end of each pin valve 21 communicates with the interior cylindrical chamber 2IA and is provided at such end with a longitudinal chamber or bore 30 which extends slightly beyond the vertical discharge jet opening 23 and each chamber 30 is also provided with a trans- .verse opening 3| in the chamber wall which is adapted to register with the discharge opening 23.

Since the device would no doubt be used withno less than one spray jet I have preferred to omit the valve 21 for the discharge opening indicated by numeral 23 and have therefore provided an opening 32 in the lower end of the head 22 which provides direct open communication between such openings 23 and the passage ZIA.

The sprinkler head 22 is provided with a preferably removable novel deector 33 which consists of a substantially solid inverted frustoconical body secured to the top of the surface 24 by screw 6I and positioned relatively centrally. to the head 22A and to the discharge end of the four discharge jets, openings 23 and 23';

The lower face of the deflector 33 is preferably vformed with a small circular extension 35 which is adapted to be seated in a similarly formed recess 36 in the upper face 24 of the head 22A to thereby insure a proper or precise positioning of the deector, and particularly its lower marginal edge 33"A relatively to the oriiices of the jet openings 23 and 23'.

In order to secure the desired directional, evenly and uniformly distributed and nely divided spray from the combined operation of all four of the jets 23 and 23', the diameter of the lower lateral face of the deflector 33 is so designed that its marginal rim 33A overlaps portions of the orifices or outlet ends of the discharge jets 23 and 23' and the uncovered portions of the outlet ends of the discharge jets 23 and 23 are so positioned that streams of water emerging therefrom under pressure engage the conical face 33B to thereby produce the desired square spray. See Fig. 5 of drawings for preferred relative proportions to secure uniform saturation.

The upper face of the deilector 33 is centrally recessed for the cylindrical collar portion BIA of the retaining screw 6I which is threaded into the central portion of the head 22A. The screw 6I is provided with an interiorly threaded passage GIB adapted to receive the threaded stem 62 the lower end of which is connected to a main circular disk valve 63 shown in partially open position in Fig. 29 and which valve 63 is adapted to be moved up and down in the cylindrical chamber 2lA to control the amount of the flow of the fluid into the discharge outlets 23 and 23'.

The valve stem 62 is preferably provided with a knurled head 62A.

To insure uniform saturation through uniform distribution and discharge, all of the various spray heads shown on the attached drawings are designed on the basic relative proportions illustrated in Figs. 24 and 25, wherein D designates the diameter of the base of the inverted frustoconical defiector, C the diameter of the circle intersecting the centers of the circularly arranged discharge orifices, and O the diameter of each discharge orifice.`

While I have illustrated and described my invention as .adapted to a water spraying device I do not wish to be understood as limiting my invention to such particular use,since it is obvious that various uses and adaptations of my invention will become readily apparent in the perusal of the above speciiication and attached drawings and likewise various changes and modifications in the details of construction herein shown may be made Without departing from the spirit of the invention embodied in the scope of the appended claims.

I claim:

1. In a spraying device,a spray head having a plurality of circularly arranged discharge passages and an inverted frusto-conical deflecting wall disposed in overlapping face contact with the orifices of said discharge passages, the diarneter of the bottom face of said deflector wall` being slightly less than the diameter of a circle intersecting the centers of said orifices.

2. In a spraying device,a spray head having a plurality of circularly arranged discharge openings spaced equi-distant of the center of the head, and an inverted frusta-conical deflector disposed relatively centrally to said openings, said deiiector having a lower circular face the diameter. lof which is slightly less than the diameter of a circle intersecting the centers of said discharge openings and the marginal edge of said deflector face being in constant contact with the orifices of said openings, said deflector being removably supported on said head in relatively stationary position.

3. In a spraying device as embodied in claim 2 and including a cylindrical rotary valve for not less than one of said discharge openings.

4. A uid spraying device comprising a tubular body having a longitudinal iluid passage therein, a supporting base for said body, an inlet for saidbody passage, a spray head at the upper end of said body, a plurality of valve-controlled discharge jets in said spray head adapted to communicate with said longitudinal passage, and a deflector having an inverted conical face adapted to be engaged by the streams of uid discharged through one or more of said jets, said deiiector comprising a removably mounted inverted frustoconical body the marginal edge of the lower face of which is adapted to cover portions of the discharge ends of said jets, and said jets comprising vertical spaced tubular passages disposed circularly about said longitudinal passage, and each of said valves comprising a rotatable cylindrical member having a chamber communicating at one end with said longitudinal passage and an opening in the wall of said chamber adapted to be moved to and from registered positions with its respective tubular jet passage upon partial rotation of the valve member.

5. A iiuid spraying device comprising a tubular body having a longitudinal fluid passage therein', a supporting base for said body, an inlet for said body passage, a spray head at the upper end of said body, a plurality of,valvecontrolled discharge jets in said spray head adapted to communicate with said longitudinal passage, and a deiiector having an inverted conical face adapted to be engaged by the streams of iluid discharged through one or more of said jets, said deector comprising a removably mounted inverted frustoconical body the marginal edge of the lower face of which is adapted to cover portions of the discharge ends of said jets, and said jets comprising vertical spaced tubular passages disposed outwardly of said longitudinal passage, and each of said valves comprising a rrotatable cylindrical member having a chamber communicating at one end with said longitudinal passage and an opening inthe wall of said chamber adapted to be moved to and from registered positions with its respective tubular jet passage upon partial rotation of theV valve member, and said base com- Vprising a pair of atcrossed over-lapping bars secured to the lower end of said tubular body, said'bars being deflected downwardly from their overlapped central portions and having upturned ends to therebyprovide curved supporting faces thereon.

6. The combination with a iluid supply pipe, of a spray head mounted on one end of said pipe, said spray head comprising a tubular body, an inverted frusto-conical deilector removably mounted on the discharge end of said body,.a disk removably mounted at the discharge end of said body having a plurality of circularly spaced discharge openings having circular orifices adapted to discharge fluid into deflecting engagement with said deector, the base of said deilector having a circular marginal edge disposed to cover less than one-half of the area of said orifices of said discharge openings, and means for se curing said deilector and said disk to said body.

7.- The combination as embodied in claim 6 and including a bridge formed integrally with and within the discharge end of said body, and said said disk to said body.

8.'A spray head comprising a body having a passage thereinextending inwardly from the inlet end of said body, a wall formed integrally with said body at the discharge end of said passage, a plurality of discharge openings in said wall communicating with said passage, removable tubular sleeves mounted in said discharge openings to restrict the cross-sectional area of the discharge openings, and an interchangeable deflector removably mounted on the end of said body having deecting means adapted to be engaged by the uid jets discharged through said sleeves.

9. A spray head comprising a body having an inlet passage extending inwardly from one end of said body, a closure wall formed integrally with said body at the outlet end of said passage, said closure wall having a plurality of discharge openings spaced circularly and communicating with said passage, a deflector having a frusta-conical deflecting wall mounted on said closure wall, said deflectingwall being adapted to be engaged by the jets of fluid discharged from said discharge openings, the diameter of the base of said deflector being slightly less than the diameter of a circle intersecting the centers of said discharge openings, and means for securing said deiiector to said closure wall.

10. In a spray head for a spray device adapted to discharge a substantially uniformly distributed spray for uniform saturation of a substantially square area comprising a body having a cylindrical inlet passage, four cylindrical discharge passages communicating with said inlet passage and having circularly arranged equally spaced circular orices, an inverted frusto-conical de-4 flector disposed centrally relatively to said orifices and having its small end in stationary face contact with and over-lapping portions of said orifices, the diameter of said small end of said deflector being slightly less than the diameter of a circle intersecting the centers of said circular orices.

11. In a spray head for a spray device adapted to discharge a substantially uniformly distributed spray for uniform saturation of a substantially square area comprising a body having a cylindrical inlet passage, four cylindrical discharge passages communicating with said inlet passage and having circularly arranged equally spaced circular orifices! an inverted frusto-conical deector disposed centrally relatively to said orifices and having its small end in stationary face contact with and over-lapping portions of said oriiices, the diameter of said small end of said deiiector being slightly less than' the diameter of a circle intersecting the centers of said circular orifices, and the diameter of each circular orifice being slightly less than one-fourth of the diameter of the circle intersecting the centers of said circular orifices.

12. In a spray head for a spray device adapted to discharge a substantially uniformly distributed spray for uniform saturation of a substantially square area comprising a body having a cylindrical inlet passage, four cylindrical discharge passages communicating with said inlet passage and having circularly'arranged equally spaced circular orifices, an inverted frusta-conical deiiector disposed centrally relatively to said orifices and lhaving its small end in stationary face contact with and overlapping portions of said orifices, the ratio of the diameter of said deflectorf small end to the diameter of a circle intersecting the centers of said circular orifices being substantially 28 to 29. l

13. In a spray head for a spray device adapted to discharge a substantially uniformly distributed spray for uniform saturation of a substantially square area comprising a body having a cylindrical -inlet passage, four cylindrical discharge passages communicating with said inlet passage and having circularly arranged equally spaced circular orices, an inverted frusto-conical deector disposed centrally relatively to said orices and having its small end in stationary face contact with and overlapping portions of said oriiices, the ratio of the diameter of said deiiector small end to the diameter of a circle intersecting the centers of said circular orifices being substantially 28 to 29 and the ratio of the diameter of any one of said orifices to the diameter of the circle intersecting the centers of said circular oriflces being substantially 13 to 58.

14. A spray head comprising a body having an inlet end and a discharge end provided with a plurality of circularly arranged circular discharge orifices and an inverted frusto-conical deector having its smaller end in face contact with said discharge end, and wherein the relative proportional dimensions of the diameter of the smaller end of said deiiector, the diameter of each of said orices, and the diameter of a circle intersecting the centers of said circularly arranged orices are substantially dened by the following formulae:

D=diameter of smaller end of deiiector, C=diameter of circle intersecting the centers of the circularly arranged orifices, :diameter of each of said orifices- D=C' less 62 of an inch, C=D plus 62 of an inch,

= less %2s of an inch, 

